A substance that accelerates any chemical reaction but is not consumed in the reaction is a _____. catalyst
buffer
substrate

Answers

Answer 1
Answer: A. Catalyst. ---------------
Answer 2
Answer:

A. Catalyst. ---------


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When a sound source is moving toward the observer, the observer will hear a higher pitch. This is due toa. a decrease in the amplitude of the sound wave.
b. a decrease in the frequency of the sound wave.
c. an increase in the frequency of the sound wave.
d. an increase in the amplitude of the sound wave.

Answers

number one a and b are automatically out if you decrease the pitch or frequency you wont hear it louder it does not add up ok?
number 2 the answer would be C the higher the frequency the higher the pitch the lower the frequency the lower the pitch this just comes back to common sense. for example you cant decrease the frequency and than expect a louder pitch its like saying I am going to smash the key on this piano with all my strength and it will make a small very low pitch sound you get what I mean so your answer would indeed be C.

How do you increase
kinetic energy of an apple

Answers


In order to give the apple more kinetic energy than it has right now,
you must make it move faster than it is moving right now.  You could
drop it, roll it, toss it, or gingerly place it in a moving car or airplane.
Whatever method you select, motion ... specifically speed ... is the
key to kinetic energy.

Which of the following describes something through which objects can be seen clearly?translucent

opaque

transparent

obtuse


Plz help me and my lil sis suck at sience :P

Answers


Its Transparent. While Transparent, Opaque, and Translucent are all able to let light through only Transparent allows objects on the other side to be clearly seen. Also Obtuse means insensitive, Slow to understand or greater than 90degrees but less than 180degrees. Hope this helps.

Answer:

It is translucent

Explanation: i put it and got it right

List the characteristics properties of all waves. at what speed do electromagnetic waves travel in a vacuum

Answers

Electromagnetic waves travel at300,000,000 metres per second  in vacuum

The fundamental properties that can be attributed to waves are;

  1. reflection
  2. refraction
  3. diffraction
  4. interference.

Other properties are ;

  1. wavelength
  2. frequency
  3. amplitude.
  • A waves can be regarded as one that  disturb the  transfers energy.
  • what all this electromagnetic waves has in common is their ability of them to travel in the vacuum with the same speed.
  • Their speed in the vacuum is  300,000,000 metres per second which is the speed of light.

Electromagnetic radiation can be regarded as radiation that has waves of the electromagnetic field, which propagate   through the space, and it moves along with electromagnetic radiant energy.

  • Electromagnetic waves that are part of electromagnetic spectrum are:
  1. radio waves
  2. microwaves
  3. infrared light
  4. ultraviolet
  5. X-rays,
  6. gamma rays.
  • Wavelength can be regarded as  distance that exist  between identical points i.e the adjacent crests of the  adjacent cycles in that waveform
  • Frequency can be explained as the rate of vibration of the wave electromagnetic field per seconds.
  • The amplitude of wave can be regarded as distance from the centre line to the bottom of a trough, or to the top of a crest.

Therefore, electromagnetic waves travel at 300,000,000 metres per second in vacuum.

brainly.com/question/3101711?referrer=searchResults

All electromagnetic waves travel at

299,792,458 meters per second

in vacuum.

An 8-N force is applied to a 2-kg box to accelerate it to the right across a table. The boxencounters a force of friction of 5 N. What is the acceleration of the object?
(1 Point)
4 m/s2
2.5 m/s2
1.5 m/s2
1 m/s2

Answers

Answer:

1.5

Explanation:

resultant force=8-5=3N

using f=ma

a=f/m

=3/2

=1.5


Why is gravity an example of scientific law?

Answers

Gravity can be an example of scientific law because of the fact that it has been proven over and over, again and again. While a theory is proven by evidence, it can be disproved. Laws rarely change. Although there are theories about gravity as well. The difference is a theory explains why it happens while a law lets us calculate a way to find what happened. In Newton's Law of Universal Gravitation, the formula will allow you to calculate the gravitational pull of the Earth and what ever you dropped for instance. However Einstein's Theory of General Relativity explains why whatever you dropped fell. So it depends what you mean by gravity being a law. It can be both depending on if your using it to prove something or to explain why that force occurs. :)

Because it is a basic concept that defines a constant and universal behaviour of nature, gravity is seen as an illustration of a scientific law.

Scientific laws are succinct formulations that precisely explain a natural occurrence and are the result of in-depth observation and investigation. Einstein's theory of general relativity or Newton's law of universal gravitation both use the concept of gravity to explain how mass-containing objects interact with one another in space.

It offers a mathematical framework that enables researchers to perform precise projections and estimates about celestial body motion, the behaviour of things close to the surface of the Earth, and the structure of the cosmos.

The fact that gravity is recognised as a scientific rule is a reflection of the fact that it is widely accepted and has been shown to have practical applications.

To know more about gravity :

brainly.com/question/31321801

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